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Mar. 13,1923; 1,448,567 0. MULLER ET AL MACHINE FOR SENDING WIRE FiledJan. '7, 1920 Fig. m 4:

u 5 by I OTTO MULLER, OF BROOKLYN, NEW YORK, AND FREDERICK C. FISCHEBJOF BEEWYN', ILLINOIS, ASSIGNORS TO WESTERN ELECTRIC COMPANY,INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

MACHINE FOR BENIDING WIRE.

Application filed January a, 1920. Serial No. 349,991.

To all whom it may Concera:

Be it known that we, Orro MULLER and FREDERICK C. FISCHER, citizens ofthe United States, residing at Brooklyn, in the county of Queens, Stateof New York, and Berwyn, in the county of Cook, State of Illinois,respectively, have invented certain new and useful Improvements inMachines for Bending Wire, of which the following is a full, clear,concise, and exact description.

The present invention relates to special machinery for manufacturingprocesses, and more particularly to machines for forming and bendingwires and rods.

It has for its object to provide a simple convenient and efficientdevice of this nature for forming the supporting wires of the stems ofelectric lamps or vacuum tubes.

The invention has for its further object to facilitate the safemanipulation of the glass stems during the operation.

In the present instance the device is designed to form hooks in thefilament-supporting wires of the tubes after these wires have beenmounted in their stems or posts.

To these and other ends the invention consists in certain improvementsand combinations of parts which will be hereinafter more fullydescribed, the novel features being pointed out in the claims at the endof the specification.

In the drawings, Figure 1 is a perspective view of a machine constructedin accordance with and illustrating one embodiment of our invention, theparts being shown in normal position;

Figure 2 is a detail sectional view illustrating the forming elements inoperative position;

Figure 3 is a view similar to Figure 2, showing the parts at a furtheradvanced stage of the operation, and

Figure 4 is a perspective view, partially broken away, of the finishedarticle in the manufacture of which our invention is utilized.

Similar reference numerals throughout the several views indicate thesame parts.

Attention is first directed to Figures 1 and 4 which show the elementacted upon. This consists of the flared stem A containing the lead wiresB and from which rises an offset extension post C containing the varioussets of supporting wires D, E and F.

The wires D are provided with hooks G at their ends, to support thefilament H in the manner shown in Fig. 4 and the present machine formsthese hooks as an initial operation before the supporting wires areotherwise bent to the completed form shown in Figure 4. In the presentembodiment, we provide a table or bed 1 supported at 2 and having fixedthereon a block 3 forming one of a pair of clamping jaws fitted with ahardened insert 4 of the contour shown. The other and opposing jaw 5 ismovable toward and from theblock 3 in guide blocks 6 forming a T-shapedguide for the base flanges 7 of the jaw. A male die member 8 at the topof the movable jaw 5 engages over the lip of the hardened insert 1 onthe fixed jaw when the jaws are brought together and such relativemovement is accomplished by a lever 9 pivoted at 10 in suitable bearings11 fixed to the bed 1. The lever is fitted with a cam 12 that slidesagainst the rear face of the movable jaw 5'to advance it with mechanicaladvantage.

The bed is provided with a laterally opening slot 13 below and invertical alignment with the contacting faces of the jaws and theselatter are also suitably cut away, as indicated at 14, to accommodateand permit the lateral insertion of the post C in such manner as tobring the support wires D be tween the jaws with their ends projectingabove the same or above the lip of the fixed jaw 3 to a predeterminedextent controlled by the seating of the upper end of the post in thecutaway portion 14 of one of the jaws. When the lever 9 is operated,bybeing moved downwardly, the movable jaw 5 advances and clamps the shanksof the wires while at the same time the die member 8 thereon bends theends to a right angle position over the lip 4 of the fixed jaw, as shownin Figure 2. The cam 12 is so formed that it is idle or ineifectivebeyond this point during a further movement of the lever 9 and while arounded, yielding forming device 15 is brought into co-operation withthe jaws and the ends of the wires. This device is in the form of afinger pivoted to the lever at 16 and pressed inwardly by a spring 17 onan adjustable support 18 carried by the lever. The rounded face of thefinger rides over the die member 8 on the movable jaw and presses thetips of the wires down close to impart to them the conformation of theportion Let the fixed jaw, as shown in Figure 3. When the lever 9 israised and the forming device carriedback, the movable jaw 5 isretracted 'injcontact with the cam 12 under the influence of a spring 19connected to a post20 therein and to a similar post 21 anchoredin thebed and the wires are released for removal. Ihe

spring 17 holds the forming member 15 closely against the jaws butprevents a harsh Contact initially with thedie member 8.

What is claimed is: I

1. A wi'rebendingdevice comprising relatively movableclamping jaws,means on one ofsaid jaws to bend, over the other jaw, the projectingend'of a wire placed between said jaws, a lever to operate one of saidjaws and a forming member carried by said operating lever and being'adaptedto cooperate with one of said jaws to bend said wire a secondtime. 7 v

2. Ina wire forming machine the combination with a slotted bed, astationary and movable jaw, said jaws being arranged to contact abovethe slot in the bed to clamp between them a length of wire insertedthrough said slot, and lipson said jaws at right angles to each other tobend the projecti-ng end of the wire at right angles to that portion ofthe wire clamped between the aws. I

3. In a 'wire-formingmachine, the combination with a slotted bed, of apair of relatively movable jawswhich are arrangedat either side of saidslot and which are adaptmas er ed to clamp between themwork insertedthrough the slotted bed, one of said jaws being provided with a male diemember 5] n a wire i'ormmg machine, the c'ombination with two relativelymovable clampmg aws, one ott which is provided with "a male die memberadapted to bend the prow jecting end of. awire placedfbetween the jaws,over theother jaw, of a lever having a cam for operating one of the jawstoward the other and a yielding forming device pivoted to the lever toco operate with the jaws in a relatively transverse direction andfurther bend the said projecting end oi? the wire.

In witness whereof, I hereunto siibscribe my name 1919.

OTTO MULLER In witness whereof, I hei'ennto subscribe my name this 30day of December A. 1)., 1919.

FREDERICK C. FISCHER.

this 25 day of November d

